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How do I disengage passkey /passlock system on a Pontiac grand prix se 1991 ?
Have you removed any of the injectors recently? The reason I ask is because I replaced one of the injectors on my Lesabre and the o-ring didn't seat properly. Then upon restart I had the infamous 3 second run/ VATS problem. Anyway, if you haven't messed with the injectors try using another key. If that is not an option then you need to measure the resistance of the little pellet that's in the key. Once you have that value, then you'll need to go to Radio Shack and pick up one of their assortment packs of resistors and create that same number plus or minus 10%. then you'll need to find the small white wire that goes to the BCM and insert those resistors in line.
on Oct 13, 2014
1991 pontiac grand prix le 3.1l overheating
I had an older vehicle that overheated. I flushed out the radiator twice, but it was so clogged up, I had to replace it, so check the radiator. If you inspect the radiator from the filler neck, you can see if there is crud build-up on the tubes. The problem could be the water pump. Typically when water pumps fail, they start to leak from the weep hole(s) on top and /or bottom. Is there any leak from the pump? If there is, that is indication that the pump need to be replaced. Hope this helps !
on Apr 04, 2014
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